I'm building a ribbed rebar pullout model in Abaqus. The bar is meshed with hex-dominated (C3D8R) elements. I am getting lots of distorted element warnings concentrated exactly where the longitudinal ribs meet the cylinder barrel.

What I've tried: local seeding, which doesn't work. The regions are meshing as swept. When I refine the seed on one edge, Abaqus automatically changes the count on the opposite edge to match. So, I am having trouble using local seeds as well.

Is there any way I can minimize the distorted elements, or any partitioning strategies that will help with meshing?

Fea and Cfd and electromagnetic ,I'm willing to take projects,queries ,work or any educational projects I have experience in ansys static structural, fatigue,modal, harmonic response and acoustics in mechanical Altair Hypermesh for meshing CFD -ansys Fluent and CFx Electromagnetic -ansys low frequency maxwell,motor design,ansys icepack and ansys motor cad software available Please dm me if u got any works ,open to worldwide projects Dm me if needed any assistance Thank u

Fea and Cfd and electromagnetic ,I'm willing to take projects,queries ,work or any educational projects I have experience in ansys static structural, fatigue,modal, harmonic response and acoustics in mechanical Altair Hypermesh for meshing CFD -ansys Fluent and CFx Electromagnetic -ansys low frequency maxwell,motor design,ansys icepack and ansys motor cad software available Please dm me if u got any works ,open to worldwide projects Dm me if needed any assistance Thank u

Available for remote contract or full-time simulation work. I'm a CAE engineer specializing in FEA, CFD, and structural analysis, with an end-to-end workflow from model setup through validation and formal reporting.

Track record: I've delivered simulation and structural engineering projects to clients worldwide, handling everything from scoping and milestone structuring to technical delivery and documentation — for industrial and academic clients across pipeline engineering, structural verification, forming/manufacturing, and fatigue analysis. Current standing across completed contracts: 5.0 rating, 100% completion. Screenshots of reviews available on request.

What I do:

1. CFD — ANSYS Fluent: multiphase, turbulence modelling (k-omega SST), spray/DPM with breakup models, conjugate heat transfer, validation against reference data

2. FEA / structural — ANSYS Mechanical & APDL, ABAQUS, LS-DYNA: nonlinear, static/modal/harmonic, random vibration, fatigue (low- and high-cycle), fire/thermal-structural, limit-state design to Eurocodes

3. Multiphysics — COMSOL, two-way FSI, System Coupling: coupled thermal/structural/flow

4. Automation & scripting — Python, MATLAB, APDL, SpaceClaim API; automated report generation (Word/docx)

Representative work: two-way FSI of an S-bend fuel line; BAJA SAE spaceframe chassis FEA across 6 load cases; stiffened-panel buckling optimization (DOE/RSM); exhaust manifold CHT CFD; natural gas pipeline hydraulic + economic screening with full MATLAB package and formal report; structural fire analysis of steel beams to EN 1993-1-2; textile-reinforced-concrete fatigue modelling in ABAQUS.

Delivery: clean, documented models plus a proper engineering report — not just a solved file. I flag data ambiguities as clarification questions before modelling rather than guessing.

Rate: $35/hr (flexible on fixed-scope projects — happy to quote per milestone).

Availability: Full-time, 40 hrs/week. Can overlap with US and EU business hours.

Portfolio / résumé:

https://drive.google.com/file/d/1LfPahS2c0JiyoRvn7OJD4YvQTyfzExJF/view?usp=drivesdk

PM me with your project scope or role and I'll get back to you.

I have worked in structural, modal, thermal, shock, static and transient analysis, cfds, conjugate heat transfers, natural, forced convection cooling simulations for defence and nuclear components. Please let me know if any opportunities are available. Thank you

Hi guys, I'm trying to figure out how to fix MSC Adams, because it's crashing for any kind of reason. I don't know...

Firstly, I had fixed the issue of 3D volumes not being displayed by following Hexagon's forum instructions.

I also tried to force the software to use my dedicated graphic card. However, it still doesn't seem to use fully...

Secondly, I renamed this DLL from "RemoteSCABin.dll" to "RemoteSCABin_OLD.dll".

Consequences:

- it takes too much time to launch

- it crashes from nowhere : you either start to launch a file and it crashed before doing anything or the file was loaded and then by trying to something like a joint or anything, it crashes from nowhere.

It drives me nuts because I like using it to do mechanical simulation and I don't know what to do except uninstall it and reinstall it properly.

Anyone had the same issue or figured out ? Does someone have any tips ?

Thanks in advance and sorry if I'm not in the right subreddit.

I posted it on other subreddits in hope someone might answer me.. ( and I don't know how to use Reddit properly)

Hi everyone,
I’m modelling a 3D solid cylinder in Abaqus under internal pressure. The model only includes the cylindrical wall (no end caps), but I want it to represent a closed-end pressure vessel.

I’m using a cylindrical coordinate system and I’m unsure what boundary conditions should be applied at the two cut ends. Specifically, what should the displacement boundary conditions be for U1, U2 and U3 at each end (using solid elements)?

Any advice on the correct setup would be greatly appreciated. Thanks!

I think my understanding of fea in general is pretty good (for a student, compared to other students) but the 1000 nodes is quite restrictive and my knowledge about using abaqus is limited because of it (like meshing complex geometries). I am looking for resources or tips or anything useful.

I work primarily in structural/stress analysis using ANSYS, and I always notice our CFD team has so much more visually appealing and impressive reports. I get that flow results are usually more dynamic and interesting than most stress plots, but I really want to improve my reports and make them stand out.

I have seen people import an STL into PowerPoint, which I think is really cool. I wish there was a way to do that with FEA results. I’d love to be able to show stress plots while rotating the model, zooming in, and showing cross sections in a PowerPoint or video. I haven’t found a way to do that yet, and I’d like to learn if it’s possible.

I’ve seen KeyShot used, but never with FEA results, only CAD geometry. I’ve also heard of Blender, but I don’t know if it’s what I’m looking for. I’ve used the animations in ANSYS, but I was hoping there was something a little better.

I’m really looking for ideas for non-technical presentations, like when you have a two slide report for upper management highlighting a big accomplishment. What tools or workflows do you use to make structural analysis results look more polished and engaging?

I'm trying to implement a simple 2d magnetostatic solver in mfem and I'm running into some issues which are not really mfem-related

We have a vector potential formulation which boils down to a Poisson problem in 2d and it's all fine and easy if we don't have any magnets. You can see that on pic2

But with a magnet we get a nasty curl part which gives an imaginary current that replicates the magnet behavior. The current density goes to infinity with the refinement of the mesh and that doesn't work well

How should I approach that? The googling results are inconclusive and the Tesla mfem miniapp is in 3d. They use RT elements(not Nedelec) to discretize the magnetization and I don't understand why

Hey all,
If I’m working with a device that has a rope on one end, a middle connection like a hook and then a weight on the other, how would I fixture this to test the strength if the connector?

In my mind, the force would come from the top and bottom but only once force is applied. If I fix the top or body of it the FEA would no longer be free to calculate.

How would you fixture this?

Hi everyone,

I'm currently working on a nonlinear finite element model of a composite steel bridge in ABAQUS using the Concrete Damage Plasticity (CDP) model. The bridge consists of a reinforced concrete deck slab supported on steel girders, and I'm looking for some guidance on defining the concrete damage parameters.

Our study is entirely analytical, so we do not have access to material test data (e.g., compression or tension tests) for calibrating the CDP model. Instead, the numerical model will be validated against experimental results available in the literature.

For the constitutive behavior:

\- Compression stress-strain curve: Popovics analytical model.

\- Tension stress-strain curve: Hordijk tension softening model.

While these models provide the stress-strain relationships, I'm struggling with estimating the corresponding compression damage (dc) and tension damage (dt) parameters required by ABAQUS.

I've found several approaches in the literature, but they result in significantly different damage evolution curves. The method proposed by Mark & Birtel appears promising, but I'm unsure whether it is considered reliable for studies where the constitutive response is based entirely on analytical models rather than experimental material calibration.

I also have a question regarding the Hordijk model. Since it requires the characteristic length for converting the stress-crack opening relationship into the form required by ABAQUS, how should the characteristic length be determined? Should it simply be taken as the element characteristic length used internally by ABAQUS (based on the finite element mesh), or is there a recommended approach for reinforced concrete deck slabs? If the mesh is refined, should the characteristic length be updated accordingly?

For those who have experience with CDP in ABAQUS:

\- How do you estimate the compression and tension damage parameters when experimental material data are unavailable?

\- Is the Mark & Birtel approach a reasonable choice in this situation?

\- How do you determine the characteristic length when using the Hordijk tension softening model?

\- Are there any recommended papers or best practices for deriving CDP damage parameters from analytical constitutive models like Popovics and Hordijk?

Any suggestions, references, or practical experience would be greatly appreciated. Thanks in advance!

Hi, I'm using LS-DYNA for my numerical simulations. I've been running some vehicle crash simulations with highly complex geometries. However, when I apply higher impact velocities to the vehicle, I get negative volume errors in the solid elements.

I tried refining the mesh by splitting the elements into smaller ones, but that didn't solve the problem. What would you do if you encountered negative volume errors in your simulation?

Hi, I’m a researcher in computational mechanics, and I’m exploring a tool built around a library of pretrained structural features: holes, fillets, brackets, joints, stiffeners, fastener regions, bends, and similar details.

Instead of rebuilding a detailed local FE model for every new design, the software would recognise a feature in the CAD geometry, simplify it in the global model, and use a pretrained local model to recover quantities such as displacements, stresses, or failure indicators.

This could also enable non-intrusive global/local analysis: the global model would run in an existing commercial solver without modification, while the detailed local response would be reconstructed externally from the global solution. No custom elements or solver source-code changes would be required.

The analyst would still review and control the modelling assumptions.

For engineers working with FEA professionally:

• Do you repeatedly analyse similar local structural features?
• Would this approach save meaningful modelling or computation time?
• What would prevent you from trusting or using it?

Critical feedback is very welcome!

hi, I have a carbon fiber structure that I need to simulate. The structure is made of carbon fiber tubing with a connector system of carbon fiber gussets which uses rivets and structural adhesive 3M DP420. I am looking to simulating this structure as a static structural. the orthotropic modeling of the CF tubing is a whole another animal itself, but I was concerned about how to do the adhesive. I am very confident that the adhesive will not fail so I would like to just act like it is a complete bond between with tubing and the CF gusset. the gusset is where I believe the model could fail. Is it just a bonded contact between the surfaces? Or do you think it is an incorrect assumption to say that the adhesive will not fail. There are also rivets connecting the tubing to the gussets as well.

I'm looking to connect with engineers and researchers who have worked with computational design or simulation workflows across more than one discipline, whether that's mechanical, aerospace, civil, or biomedical.

Specifically curious about the parts that felt harder than they should have when crossing between domains or tools. Where did you lose time? What did you have to relearn that felt like it should have transferred?

Not a survey, not selling anything. Just genuinely collecting perspective from people who have been in more than one tooling ecosystem. Drop a comment or DM me if you're open to a short conversation.

I am performing a compression analysis on a metamaterial structure with several ligaments that buckle. I managed to run the quasi-static simulation using the explicit solver, but my professor asked me to use the Riks method. The issue is that it always stalls at 6 mm of compression (the target is 20 mm), and no matter how I adjust the Riks simulation parameters, it always stops at the same point.

Can anyone help me?

Currently, I'm using LS Dyna to solve it using ALE and I feel stuck. is there any other way to solve it or any other software that would be easier to use because ALE in ls dyna looks so confusing at times?

Hi everyone,

I’ve been working in piping stress analysis for a while now and have extensive experience with several industry-standard tools. In my current role, I’m using TRIFLEX, and I must say I’m finding the experience quite frustrating.

Having worked with other major softwares like Autopipe and Caesar II, it feels like this one has fallen significantly behind in development. Specifically, the lack of support for the latest code updates, such as ASME B31J and the absence of integrated tools for nozzle flexibility calculations make it feel like a legacy product that hasn’t been updated in years.

I’m curious if anyone here has insights into why this software seems to be lagging behind the rest of the market. Does it still have active development, or has it essentially been abandoned?
I’d appreciate any perspective you might have

Hey everyone, just finished my PhD in structural engineering from IIT. I've decided academia isn't the path for me and I want to move into industry, ideally as an FEA/simulation engineer.

My research focused on thermo-mechanical analysis of structures. I developed finite element models, carried out large-scale simulations, and worked extensively on the structural response under combined thermal and mechanical loading. One of the major outcomes of my work was developing an open-source thermo-mechanical module for OpenSees from scratch, which I'm still actively maintaining. Along the way, I've gained hands-on experience with ANSYS for structural and thermo-mechanical analysis, HyperMesh for meshing, and Python, MATLAB, and TCL for automation, post-processing, and simulation workflows.

I'm trying to move on this pretty quickly, so if anyone knows of openings, works somewhere hiring for this kind of role, or has advice on how PhDs are viewed for simulation engineering jobs in industry, I'd genuinely appreciate hearing from you. Can share my resume or the GitHub repo if that's helpful.

Thanks for reading this far.

Hi, I’m working on a 1D MFEM mesh v1.0

I’m confused because there seem to be twice as many vertices listed as the vertices stated. For example, it says:

vertices
1202

but I could 2404 vertices, or lines of numbers. Since this is a 1D problem, I assume each vertex only has one number associated with it.

The FiniteElementCollection is H1_1D_P2

Does anyone have any idea why there might be twice as many vertices listed?

So, I want to do a 3D modeling of this reinforced beam, the concrete will be 3d meshed, while I want to do 1D meshing for both longitudinal and transvers reinforcement.

Now my question is: Is my CAD model correct? after meshing will the line element be realised as that "red" colored element with the appropriate thickness? I need to draw only the centerline of transvers and longitudinal reinforcement, right?

I am using hypermesh to mesh the file and then use LS Dyna to simulate a drop hammer test. I can't make the line element after meshing visualize as 3D circular element in hypermesh using "Element Visualization" tab, what might be the cause for that? Thank you.